[Postpartum risk factors in the development of children born to opiate-addicted mothers; comparison between mothers with and without methadone substitution].

In a retrospective case control study at the University of Frankfurt, Germany, 101 babies born to opiate-addicted mothers were identified from birth charts from 1988 to 1995. After birth, they developed a withdrawal syndrome (neonatal abstinence syndrome). Fifty control infants and their mothers were selected from neonatal wards. The group of opiate-exposed babies was subdivided into a group born to mothers without methadone treatment (n = 48) and a group born to mothers who were enrolled in a methadone program (n = 51). The methadone infants had a significantly higher mean birth weight (2822 g) than children in the group without methadone (2471 g). The abstinence syndrome was much more intense in the methadone group (convulsions 47.1%) than in heroin-exposed babies without methadone treatment (convulsions 27.1%). Women in methadone maintenance programs lived in more stable socioeconomic conditions than opiate-addicted women without methadone substitution. Moreover, they cared significantly better for their babies: 81.3% of the methadone mothers visited their children on a regular basis and 90.9% cared adequately. The data emphasize the need in future research to look more closely at the role of methadone treatment programs in the development of opiate-exposed babies.